I think the issue is not about applying DEI in French companies, nor it exist. The problem is a foreigner leader telling an independent country how he should manage his companies, or at least, to foreign companies how they should hire people. You can't be a libertarian from one side and tell such things... until you want to fire every human and make every company in the world running with Musk AI and robots ...
Musk, the great champion of freedom of speech!